Staffordshire University logo
STORE - Staffordshire Online Repository

Improving data acquisition speed and accuracy in sport using neural networks

Papic, Christopher, Sanders, Ross H, NAEMI, Roozbeh, Elipot, Marc and Andersen, Jordan (2020) Improving data acquisition speed and accuracy in sport using neural networks. Journal of Sports Sciences, 39 (5). pp. 513-522. ISSN 0264-0414

Papic_JSS_MainDocument_2020 (1).pdf - AUTHOR'S ACCEPTED Version (default)
Available under License Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0).

Download (772kB) | Preview

Abstract or description

Video analysis is used in sport to derive kinematic variables of interest but often relies on time-consuming tracking operations. The purpose of this study was to determine speed, accuracy and reliability of 2D body landmark digitisation by a neural network (NN), compared with manual digitisation, for the glide phase in swimming. Glide variables including glide factor; instantaneous hip angles, trunk inclines and horizontal velocities were selected as they influence performance and are susceptible to digitisation propagation error. The NN was ‘trained’ on 400 frames of 2D glide video from a sample of eight elite swimmers. Four glide trials of another swimmer were used to test agreement between the NN and a manual operator for body marker position data of the knee, hip and shoulder, and the effect of digitisation on glide variables. The NN digitised body landmarks 233 times faster than the manual operator, with digitising root-mean-square-error of ~4-5mm. High accuracy and reliability was found between body position and glide variable data between the two methods with relative error ≤5.4% and correlation coefficients >0.95 for all variables. NNs could be applied to greatly reduce the time of kinematic analysis in sports and facilitate rapid feedback of performance measures

Item Type: Article
Faculty: School of Life Sciences and Education > Sport and Exercise
Depositing User: Roozbeh NAEMI
Date Deposited: 29 Mar 2021 15:04
Last Modified: 24 Feb 2023 14:01

Actions (login required)

View Item View Item

DisabledGo Staffordshire University is a recognised   Investor in People. Sustain Staffs
Legal | Freedom of Information | Site Map | Job Vacancies
Staffordshire University, College Road, Stoke-on-Trent, Staffordshire ST4 2DE t: +44 (0)1782 294000